public RequestVoteResponse Handle(RequestVote requestVote)
{
var response = RequestVoteTermIsGreaterThanCurrentTerm(requestVote);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
response = _rules.RequestVoteTermIsLessThanCurrentTerm(requestVote, CurrentState);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
response = _rules.VotedForIsNotThisOrNobody(requestVote, CurrentState);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
response = LastLogIndexAndLastLogTermMatchesThis(requestVote);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
return(new RequestVoteResponse(false, CurrentState.CurrentTerm));
}
public async Task <RequestVoteResponse> Handle(RequestVote requestVote)
{
var response = RequestVoteTermIsGreaterThanCurrentTerm(requestVote);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
response = _rules.RequestVoteTermIsLessThanCurrentTerm(requestVote, CurrentState);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
response = _rules.VotedForIsNotThisOrNobody(requestVote, CurrentState);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
response = await LastLogIndexAndLastLogTermMatchesThis(requestVote);
_messagesSinceLastElectionExpiry++;
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
return(new RequestVoteResponse(false, CurrentState.CurrentTerm));
}
public async Task <RequestVoteResponse> Handle(RequestVote requestVote)
{
var response = RequestVoteTermIsGreaterThanCurrentTerm(requestVote);
if (response.shouldReturn)
{
return(response.requestVoteResponse);
}
return(new RequestVoteResponse(false, CurrentState.CurrentTerm));
}
public RequestVoteResponse Handle(RequestVote requestVote)
{
return(State.Handle(requestVote));
}
private (RequestVoteResponse requestVoteResponse, bool shouldReturn) LastLogIndexAndLastLogTermMatchesThis(RequestVote requestVote)
{
if (requestVote.LastLogIndex == _log.LastLogIndex &&
requestVote.LastLogTerm == _log.LastLogTerm)
{
CurrentState = new CurrentState(CurrentState.Id, CurrentState.CurrentTerm, requestVote.CandidateId, CurrentState.CommitIndex, CurrentState.LastApplied, CurrentState.LeaderId);
BecomeFollower();
return(new RequestVoteResponse(true, CurrentState.CurrentTerm), true);
}
return(null, false);
}
private (RequestVoteResponse requestVoteResponse, bool shouldReturn) RequestVoteTermIsGreaterThanCurrentTerm(RequestVote requestVote)
{
if (requestVote.Term > CurrentState.CurrentTerm)
{
CurrentState = new CurrentState(CurrentState.Id, requestVote.Term, requestVote.CandidateId,
CurrentState.CommitIndex, CurrentState.LastApplied, CurrentState.LeaderId);
BecomeFollower();
return(new RequestVoteResponse(true, CurrentState.CurrentTerm), true);
}
return(null, false);
}
public async Task <RequestVoteResponse> Handle(RequestVote requestVote)
{
return(await State.Handle(requestVote));
}
public RequestVoteResponse Request(RequestVote requestVote)
{
throw new NotImplementedException();
}
private async Task <(RequestVoteResponse requestVoteResponse, bool shouldReturn)> LastLogIndexAndLastLogTermMatchesThis(RequestVote requestVote)
{
if (requestVote.LastLogIndex == await _log.LastLogIndex() &&
requestVote.LastLogTerm == await _log.LastLogTerm())
{
CurrentState = new CurrentState(CurrentState.Id, CurrentState.CurrentTerm, requestVote.CandidateId, CurrentState.CommitIndex, CurrentState.LastApplied, CurrentState.LeaderId);
return(new RequestVoteResponse(true, CurrentState.CurrentTerm), true);
}
return(null, false);
}